Which term refers to multicellular organisms in the animal kingdom?

• A. Sea Grass
• B. Animal
• C. Rhodophyta
• D. Unicellular Algae

Answer: (B)

Multicellularity is a characteristic of animals as a group, and the term that refers to organisms in the animal kingdom is Animal. Sea grass are multicellular plants that photosynthesize and belong to the plant kingdom, not the animal kingdom. Rhodophyta are red algae, a form of algae that are not animals. Unicellular algae are single-celled organisms and therefore not multicellular. So the word that best identifies multicellular organisms within the animal kingdom is Animal.